Improvement in saw-gumming machines



' ering the former.

' the bed-lug K.

UNITED STATES PATENT QFFICE.

CHARLES P. CASE AND JOSEPH W. MEREDITH, OF TROY TOWNSHTP, BRAD- FORDCOUNTY, PENNSYLVANIA.

IMPROVEMENT IN SAW-GUMMING MACHINES.

To all whom it may concern: 1

Be it known that we, GHAs. P. OAsE and J. W. MEREDITH, of Troy township,in the county of Bradford and State of Pennsylvania, have invented a newand valuable Improvement in Saw-Gumming Machines; and

we do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to theannexed drawing making a part of this specification, andto the letters and figures of I reference marked thereon.

Figure l of the drawing is a representation of asectional view of ourinvention. Figs. 2, 3, 4, 5, 6, and 7 are detail views of the same. Thisinvention has relation to machines for gumming saws; and consists in theconstruction and novel arrangement of the pivoted slotted bar andinterchangeable devices for supporting the plates while being punched orstamped, all as hereinafter more fully described.

Referring to the accompanying drawing, A

. represents an L-shaped metallic frame, slotted vertically in front toreceive the movable die or punch-socket B, holding the wedge-shapedpunch 12 with lug c. 0 represents bearings to the shaft of a cam-lever,I), by means of which the punch is operated, and which is grooved at dtoreceive a bent lug, d, on the end of the punch-socket or plunger. Thehead of the.

lever is made with an offset at c to admit the lug. By means of thisconnection the punch and lever operate together in raising and low- Theslot through which the punch-socket plays is closed by a plate, D,

slotted at c to receive a set-screw, F, inserted in the punch-socket, asshown, and brought in contact with the punch-shank B to hold the punchin the socket. The punch works in connection with the lower stationarydie G, which is set in a recess of the bed H and secured by screws orbolts I through the bedflanges J, and by a metallic wedge, K, restingbetween the oblique end of the die and This arrangement allows the lowerdie to be adjusted to compensate for wear. The lower die is constructedwith a keen-edged wedge-shaped slot, L, corresponding exactly to theform of the tool I). The saw-plate rests on the lower die over the slotL, and is stamped by the punch, the pieces cut out, falling through anaperture, m, of the bed H, and thence through an aperture, m, in aplate, M. M designates a horizontal plate, secured by bolts a to thebottom of the frame A. N indicates a longitudinally-slotted bar pivotedto the plate M. O designates an ad justable block, flanged at P, therebyadapted to the slot 11 and secured at any position by a crank-bolt, 2having a collar, If, as shown. The block 0 is provided with two arms, 0,curved upwardly, outwardly, and toward the dies. The ends of said armsare notched, as at r, to receive the blank edge of a straight saw-plate,and to hold the same during the gumming operation.- For the block 0a'block, R, is substituted to hold a circular saw. The block Rissimilarly flanged and arranged, but, instead of the arms 0, has atube-socket,'R', in which the saw-arbor is put and held.

The bar N may be swung around on its .pivot, and secured at any angle sothat the teeth of the saws may be cut at any desirable pitch.

The dies may be of different forms, and one set substituted for another,when necessary.

The punch is constructed of properly-tem-- sate for wear the punch iscapable of being lowered by loosening the screw F. To render the punchfirm when adjusted, collars l are placed over the shank and held betweenthe solid collar of the punch and the end of the socket, as shown.v

Having thus described our invention, what .we claim, as new, and desireto sccureby Let ters Patent, is

1. The interchangeable devices It and O, jointly, with the pivoted andslotted bar N,

and the punch B and die G, substantially as 2. The combination of thesliding saw-holder O, slotted and pivoted bar N, punch B, die G, andlever D, substantially as described.

In testimony that we claim the above we have hereunto subscribed ournames in the presence of two witnesses.

CHAS. P. CASE.

JOSEPH WM. MEREDITH.

W'itnesses CYRUS J. WILSEY, WM. I. BANKS.

